Why?
Seriously, the only open Wiccan on the board (and I happen to admit to having some psychic talent) is asking you WHY you believe you should trust "the small still voice within."
Or rather, I'm really asking you why you believe you should DIStrust your husband.
If you have had hunches in the past that have panned out, and you've learned to trust those hunches, that's one thing but if you're operating on a "I just think he's slimey" ehhh, I have to ask, how much is his behavior and how much is just you getting SICK of his (perfectly normal) behavior.